Data Representation

Overview

Framework:
Access to HE 2024
Level:
Level 3
Unit No:
Not available
Credits:
3
Guided learning hours:
Not available

Qualification Grading Type

Graded

Unit Learning Outcomes

1.

Understand data numeral systems.

Assessment Criteria

  • 1.1.

    Explain the types of data numeral systems used in computing.

2.

Be able to use data numeral systems in practical applications.

Assessment Criteria

  • 2.1.

    Perform operations involving data numeral systems.

  • 2.2.

    Use twos complement to test for overflow in a computer system.

  • 2.3.

    State and implement the algorithm to perform an arithmetic operation involving normalised floating points.

3.

Understand representation of text, images and sound.

Assessment Criteria

  • 3.1.

    Explain how coding, including ASCII and Unicode, are used to represent text.

  • 3.2.

    Explain how pixels and metadata are used to represent images including coloured images.

  • 3.3.

    Explain how the quality of an image can be affected by the resolution of the image

  • 3.4.

    Explain how sampling is used in the process of representing sound.

  • 3.5.

    Explain compression of data and how it is processed.